I have found out the file which is triggering the change, from there you can find which tab has been changed, the JS file path is - "vendor/magento/module-ui/view/base/web/js/form/components/area.js".
In this, there are two functions - initElement() and onChildrenUpdate().
Please check the below screenshots for how I have debugged which one is the element by printing out its label name. You can also use the help of UiRegistry.Please let me know if this was helpful. Thank you.
This is the image for the output in the console for which the tab has been edited.